Energy Analysis: Lecture 1: Class Introduction. Spring Arch 640 / 540 California College of the Arts. Ryan Stroupe, Sam Jensen Augustine

Transcription

1 Energy Analysis: Arch 640 / 540 California College of the Arts Ryan Stroupe, Sam Jensen Augustine Lecture 1: Class Introduction Spring 2011

2 Class agenda for today Introductions Overview of school climate objectives David Meckel Review class syllabus and website California strategic plan on energy efficiency Sam Benchmarking overview Ryan Benchmarking demonstrations Ryan Introduce first assignment Watch An Inconvenient Truth

3 Energy Analysis Class Architecture 540/640 Supports CCA s participation in the American College & University Presidents Climate Commitment (ACUPCC). Analyze existing CCA facilities. CSI for Architects Instructors: Ryan Stroupe and Sam Jensen Augustine Spring 2011 semester, Fridays 12:00 pm to 3:00 pm.

4 The need to focus on existing buildings New buildings represent only 1% of building square footage. Existing U.S. buildings account for almost half of US energy use and 10% of global energy use. Existing buildings may not have met energy code ever. Existing building upgrades are not as vulnerable to economic ups and downs. Architects uniquely qualified to consider integration of new technologies in old facilities.

5 Making an immediate impact. Oakland Campus San Francisco Campus

6 Relevant terms Retrofit the addition of new technology or features to older systems Restoration/Rehab work performed on a building in order to return it to a previous state of conservation (often done to Landmark status facilities) Redesign To make a revision in the appearance or function of a building. Scope can vary greatly but some aspects of the existing building are maintained. Remodel To make over in structure or style; reconstruct. Often implies a more modest change than a redesign.

7 1. Building benchmarking score/greenhouse Gas Inventory report 2. Represent a facility finding 3. Data analysis study and presentation 4. Final project: Retrofit/Redesign/Implementation Proposal Class assignments

8 Project 1: Benchmarking CCA Buildings with Portfolio Manger and Energy IQ Benchmarking buildings is a method used to determine the energy use intensity of facilities. It is our intent to benchmark as many CCA facilities as possible in order to determine which buildings are most deserving of our investigative efforts over the upcoming semester. We will benchmark CCA facilities using two free tools: 1) Energy Star s Portfolio Manger and 2) Lawrence Berkeley National Lab s Energy IQ. The benchmarking process will require that we enter information about each facility s energy use (electric and natural gas), square footage by space type, location, occupancy and equipment density into these two web-based programs. This assignment will also contribute to the Greenhouse Gas Inventory for CCA facilities.

9 Project 2: Represent a facility finding We will tour all CCA facilities in San Francisco and Oakland during the 3rd and 4th weeks of the semester respectively. During these walkthroughs we will assess the envelope, mechanical, lighting and receptacleload components of these buildings. We document the facilities using notes, photographs and measurement data. The second assignment for this class is to represent one of the findings from the walk-throughs. You could document a re-design possibility, a retrofit to the facility or the rehabilitation of an under-utilized area. The nature of this representation is up to each student. Information can be presented as videos, photographs, drawings, graphs, written reports or through the use of some other acceptable media.

10 Project 3: Data analysis study and presentation One of the best ways to understand the operation of existing facilities is to monitor the building using dataloggers or other measurement devices. These tools can help identify energy waste, broken equipment, inactive controls, occupant comfort issues, and other building performance problems. This assignment requires students to collect, assemble and analyze data. The scope of the study can range from studying a single aspect of a facility to an exploring an issue that involves several facilities. We would like these investigations to have some energy or building performance component. Monitoring equipment from the Pacific Energy Center s Tool lending Library will be made available for this project. HWS Temp (deg F) HWST & Pump status with time Low HWS Temp on Mondays Pump status

11 Final Project: Retrofit/Re-design/Implementation Proposal Other than the requirement that the project focus on one or several CCA facilities and have some energy aspect, the final project is very open-ended and is to be determined by each individual student. This single project represents 50% of the grade for this class so the most important aspect of this final effort for the term is that it is ambitious in nature. Ideally the final project will spring from and build onto the results of either Project 2 or Project 3. The final project may explore building redesign, rehabilitation or retrofit opportunities. In addition to clearly defining any proposed changes to CCA facilities using detailed drawings, equipment specifications and cost data, the final project must also define and monetize any environmental benefits. Essentially the final project should resemble a legitimate proposal that one would submit to CCA administrators for approval and funding.

12 Benchmarking Why do it? A benchmark is a reference point for comparing buildings, or building systems, with similar parameters. Heightens energy use awareness. Benchmarking will allow us to identify and therefore focus on worst performing facilities. Benchmarking will allow us to gauge the optimized performance of the building from a known starting point. Related to sustainable building rating systems like LEED. Required for buildings sold in CA beginning in January 2011.

13 Energy Star score vs. kbtu/sq /sq-ft Benchmarking data LBL Building Sutardja Dai Hall 140 Gunderson Hign School EmeryStation North PG&E Hayw ard Service Center 120 kbtu/sqft Lindsay Wildlife Museum 651 Gatew ay 60 The Brick Kiln IBEW 332 Santa Clara Tow ers Port of Oakland David Brow er Center Scavenger Admin Liberty Tow ers Church Ene rgystar

14 Pre and post data for a facility Average Daily Electrical Consumption PG&E Pacific Energy Center 1,200 1,000 Average Daily kwh April March 2001 April March 2003 April March April May June July August September October November December January February March

15 AB 1103 California Benchmarking Signed into law in October 2007 by Governor AB 531 defines implementation schedule As of January of 2011 building owners required to disclose benchmarking data for sale, lease or refinancing of buildings. Owner occupied facilities > 1,000 sq ft Multi-tenant buildings > 50,000 sq ft As of January of 2012, multi-tenant buildings > 10,000 sq ft As of January of 2013, all non-res buildings > 1,000 sq ft Building eligible for Energy Star system must disclose score All other facilities must disclose kbtu/sqft-yr data

16 Requires utility data Electric Natural gas Steam Chilled water Outputs Benchmarking Options Energy use intensity (EUI); e.g., kbtu/square foot/year or Score e.g., Source energy versus site energy Building energy performance comparison to like buildings Similar type Similar climate (area) Similar size

17 Some Benchmarking Tools Energy Star CBECS ARCH CalArch E-Benchmark Energy IQ

18 Energy Star Benchmarking Program Joint effort of the U.S. EPA and DOE Free and secure tool Uses easily understood rating system (1-100) Scores building to provide reference against the market National standard for benchmarking Seeks to recognize top 25% of the market 140,000 facilities analyzed 10,000 have received energy star label Voluntary program (this is changing with AB1103)

19 Energy Star is Comparative Metric

20 Input Fields for Energy Star Building Size Space type Weather Hours of operation Occupancy Plug loads

21 Eligible Space Types for Energy Star

22 Use rating to determine approach to facilities

23 New does not always mean efficient

24 Performance Statement

25 Process for getting Energy Star rating

26 Energy Star Portfolio Manager

27 Energy Star Portfolio Manager Office Building, Zip Code ,000 sqft, 100 occupants, 100 PCs Score kbtu/sqft

28 Energy IQ

29 Commercial building benchmarking tool Online (web-based) software Utilizes database of California buildings from PG&E/SCE Commercial End-Use Survey Developed by LBNL with funding from the CEC Input parameters: Building types; 18 options Building size; conditioned floor area Energy usage; consumption Weather; zip code

30 CalArch Benchmarking Tool

31 Cal-Arch Output Cumulative Histogram

32 CalArch: with other buildings in sample

33 Announcements Lecture materials, project 1 description, utility data, building descriptive information and Energy Star instructions to be posted on website tomorrow. will be sent out to all class attendees with web site address and instructions. Check your this weekend. Will include link to California strategic energy plan. Look this over before next meeting. View remainder of An Inconvenient Truth by next meeting. Will need clipboard, flashlight and digital camera for week 3 meeting. Week 4 meeting to take place at Oakland campus. Questions?